<?php
function getPostViews($postID){   
    $count_key = 'post_views_count';   
    $count = get_post_meta($postID, $count_key, true);   
    if($count==''){   
        delete_post_meta($postID, $count_key);   
        add_post_meta($postID, $count_key, '0');   
        return "0 Views";   
    }   
    return $count.' Views';   
}   
function setPostViews($postID) {   
    $count_key = 'post_views_count';   
    $count = get_post_meta($postID, $count_key, true);   
    if($count==''){   
        $count = 0;   
        delete_post_meta($postID, $count_key);   
        add_post_meta($postID, $count_key, '0');   
    }else{   
        $count++;   
        update_post_meta($postID, $count_key, $count);   
    }   
}
